Difference between different Context classes

Adler_Steven always used this:
// Create the initial directory context
LdapContext ctx = new InitialLdapContext(env,null);
I use this:
DirContext ctx = new InitialDirContext(env);
both methods work for changing a password...
Can someone explain that to me please?

From the JNDI tutorial,
http://java.sun.com/products/jndi/tutorial/getStarted/
overview/ldap.html the ldap class allows you to use
specific ldap features such as the extended controls
etc.ok so only using these extended tools forces me to make an instanz variable ctx of the InitialLdapContext, thank you i have understood it.

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Differences between different versions of BW 2.1C,3.0A and 3.5

Can anybody tell me the differences between different versions of BW.
I m new to SAP BW,i directly learned in BI7.0.So please anybody let me know the difference in implementation of features in 2.1C, 3.0A ,3.5 ,if possible BI7.0 also

please read this:
http://help.sap.com/saphelp_nw70/helpdata/en/b2/e50138fede083de10000009b38f8cf/frameset.htm

Differences between different IR versions

Can you please tell me the differences between different IR versions?
Thanks

Here are the 11.1.2 specific IR changes: from the R&A Readme:
Interactive Reporting
Support for SFTP
SFTP protocol is now supported for distribution outputs generated by jobs and schedules. For more information, see the Hyperion Reporting and Analysis Framework Administrator’s Guide.
Interactive Reporting Roles
Two new roles, IR HTML Viewer and IR WebClient Viewer, have been added for Interactive Reporting. For additional information, see the EPM User and Role Security Guide.
Removal of CMC
CMC is no longer a separate web application. All functionality has been merged into the Administer module. For more information, see the Hyperion Reporting and Analysis Framework Administrator’s Guide.
There are also several Workspace changes which would could impact IR users as well, depening on your particular set up , it might be worthwhile reviewing those as well.
Cheers, Iain

Comparison insertion/search time between different Collection class

Hi,
Does someone know where I can find a clear an complete comparison between different JAVA class which implements interface Collection?
I want to compare:
- elements insertion time
- elements search/removal time
Thank you very much in advance
Diego

from wikipedia: Its purpose is to characterize a function's behavior for very large (or very small) inputs in a simple but rigorous way that enables comparison to other functions.
meaning if I ask how quick an algorithm is you might say it completes in 10 seconds but the next time you run it it might take 8 seconds. It kind of depends on what else your computer is doing/ how fast your computer is or how much data you are putting through ie if the puter has little memory it might need to use virtual memory which will have an effect on your performance.
Big O notation identifies how much work has to be carried out. The easiest example is a simple search of an array:
for (int i = 0; i < array.length; i++) {
if (array[i] == "weijewr") {
return i;
}Where n represents a number of elements:
This takes O(n) (big Oh of N) as potentially you need to look at each element.
if you were to write a standard bubble sort it would be O(n2) as potentially you need to iterate the array once for each element.

Difference between different RFCs

Hi All,
Could you please provide me with some useful material or brief knowledge where i can find out :
what is an s-RFC, t-RFC and q-RFC ? ?
Where all these are used ? ?
And what is the Difference between them ? ?
Regards,
Arkesh Sharma

Please check this link
http://help.sap.com/saphelp_nw2004s/helpdata/en/62/73241e03337442b1bc1932c2ff8196/content.htm
http://help.sap.com/saphelp_nw2004s/helpdata/en/6f/1bd5b6a85b11d6b28500508b5d5211/content.htm
The qRFC Communication Model
qRFC Properties and Possible Uses
All types of applications are instructed to communicate with other applications. This communication may take place within an SAP system, with another SAP system, or with an application from a remote external system. An interface that can be used for dealing with this task is the Remote Function Call (RFC). RFCs can be used to start applications in remote systems, and to execute particular functions.
Whereas the first version of the RFC, the synchronous RFC, (sRFC) required both systems involved to be active in order to produce a synchronous communication, the subsequent generations of RFC had a greater range of features at their disposal (such as serialization, guarantee for one-time-only execution, and that the receiver system does not have to be available). These features were further enhanced through the queued RFC with inbound/outbound queue.
Communication between applications within an SAP system and also with a remote system can basically be achieved using the Remote Function Call (RFC). Here, the following scenarios are possible:
· Communication between two independent SAP systems
· Communication between a calling SAP system and an external receiving system
· Communication between a calling external system and an SAP receiving system
The following communication model shows what these communication scenarios may look like in reality. The actual sending process is still done by the tRFC (transactional Remote Function Call). Inbound and outbound queues are added to the tRFC, leaving us with a qRFC (queued Remote Function Call). The sender system is also called the client system, while the target system corresponds to the server system.
Scenario 1: tRFC
This scenario is appropriate is the data being sent is independent of each other. A calling application (or client) in system 1 uses a tRFC connection to a called application (or server) in system 2. In this scenario, data is transferred by tRFC, meaning that each function module sent to the target system is guaranteed to be executed one time only. You cannot define the sequence in which the function modules are executed, nor the time of execution. If an error occurs during the transfer, a batch job is scheduled, which sends the function module again after 15 minutes.
Scenario 2: qRFC with outbound queue
In this scenario, the sender system uses an outbound queue, to serialize the data that is being sent. This means that function modules which depend on each other (such as update and then change) are put into the outbound queue of the sender system, and are guaranteed to be sent to the target system one after each other and one time only. The called system (server) has no knowledge of the outbound queue in the sender system (client), meaning that in this scenario, every SAP system can also communicate with a non-SAP system. (Note: the programming code of the server system must not be changed. However, it must be tRFC-capable.)
Scenario 3: qRFC with inbound queue (and outbound queue)
In this scenario, as well as an outbound queue in the sender system (client), there is also an inbound queue in the target system (server). If a qRFC with inbound queue exists, this always means that an outbound queue exists in the sender system. This guarantees the sequence and efficiently controls the resources in the client system and server system. The inbound queue only processes as many function modules as the system resources in the target system (server) at that time allow. This prevents a server being blocked by a client. A scenario with inbound queue in the server system is not possible, since the outbound queue is needed in the client system, in order to guarantee the sequence and to prevent individual applications from blocking all work processes in the client system.
Properties of the Three Communication Types
To help you decide which communication type you should use in your system landscape for your requirements, the advantages of the three communication types are listed below:
1. tRFC: for independent function modules only
2. qRFC with outbound queue: guarantees that independent function modules are sent one after each other and one time only (serialization). Suitable for communication with non-SAP servers.
3. qRFC with inbound queue: in addition to the outbound queue in the client system, an inbound queue makes sure that only as many function modules are processed in the target system (server) as the current resources allow. Client and server system must be SAP systems. One work process is used for each inbound queue.
The qRFC Communication Model
Purpose
Communication within an SAP system or with a remote system can take place using Remote Function Call (RFC). This enables the following scenarios:
· Communication between two independent SAP systems
· Communication between a calling SAP system and an external receiving system
· Communication between a calling external SAP system and an SAP system as the receiving system
Implementation Considerations
The following communication model shows how these communication scenarios can occur in practice. tRFC (transactional Remote Function Call) is still responsible for actually sending communications. tRFC is preceded by inbound and outbound queues, which have led to the name qRFC (queued Remote Function Call). The sending system is called the client system, and the target system represents the server system.
There are three data transfer scenarios:
Scenario 1: tRFC
This scenario is suitable if the data being sent is not interrelated. A calling application (or client) in system 1 uses a tRFC connection to a called application (or server) in system 2. In this scenario, the data is transferred using tRFC. This means that each function module sent to the target system is guaranteed to be processed once. The order in which the function modules are executed, and the time they are executed, cannot be determined. If a transfer error occurs, a background job is scheduled that resends the function module after a defined period of time.
Scenario 2: qRFC with Outbound Queue
In this scenario, the sending system uses an outbound queue to serialize the data being sent. This means that mutually dependent function modules are placed in the outbound queue of the sending system and are guaranteed to be sent in the correct sequence, and only once, to the receiving system. The called system (server) has no knowledge of the outbound queue in the sending system (client). Using this scenario, every SAP system can communicate with a non-SAP system (the program code of the server system does not need to be changed, but it must be tRFC-compliant).
Scenario 3: qRFC with Inbound Queue (and Outbound Queue)
In this scenario, in addition to the outbound queue in the sending system (client), there is also an inbound queue in the target system (server). qRFC with an inbound queue always means that an outbound queue exists in the sending system. This guarantees that the sequence of communications is preserved, and at the same time the resources in the client and in the server system are controlled efficiently. The inbound queue is processed using an inbound scheduler, which only processes as many queues in parallel as the current resources in the target system (server) will allow, This prevents a server from being blocked by a client.
Features
Features of the Three Communication Types
To help you decide which communication types you need to implement according to your system landscape and your requirements, the advantages of the three types of communication are explained below:
· tRFC
Suitable only for independent function module calls; the sequence of the calls is not preserved
· qRFC with outbound queue
Function modules in a queue are guaranteed to be processed only once and in sequence (serialization). Also suitable for communication with non-SAP servers.
· qRFC with inbound queue
The function modules created in the outbound queue are transferred from the outbound queue to the inbound queue; the sequence of the function modules is preserved. An inbound scheduler processes the inbound queues in accordance with the specified resources. Both the client and the server system must be SAP systems. One work process is used for each inbound queue.
Queued Remote Function Call (qRFC)
Purpose
All types of applications are instructed to communicate with other applications. This communication may take place within an SAP system, with another SAP system, or with an application from a remote external system. An interface that can be used for dealing with this task is the Remote Function Call (RFC). RFCs can be used to start applications in remote systems, and to execute particular functions.
Integration
In contrast the first version of RFC, synchronous RFC (sRFC), which required both participating systems to be active to form synchronous communication, subsequent generations of RFC now provide a considerably extended range of functions (for example, serialization, guarantee that processing occurs once, and the receiving system does not have to be available). These features were further enhanced through the queued RFC with inbound/outbound queue.
Contents:
The information about qRFC is organized into the following main sections, with more detailed subsections:
The qRFC Communication Model
· qRFC with Outbound Queues
· qRFC with Inbound Queues
qRFC Administration
· qRFC Administration: Introductory Example
· Outbound Queue Administration
· Inbound Queue Administration
qRFC Programming
· qRFC Programming: Introductory Example
· Outbound Queue Programming
· Inbound Queue Programming
· qRFC API
For an introduction to the new bgRFC (Background RFC), use the following links:
bgRFC (Background RFC)
· bgRFC Administration
· bgRFC Programming
Using Asynchronous Remote Function Calls
Asynchronous remote function calls (aRFCs) are similar to transactional RFCs, in that the user does not have to wait for their completion before continuing the calling dialog. There are three characteristics, however, that distinguish asynchronous RFCs from transactional RFCs:
· When the caller starts an asynchronous RFC, the called server must be available to accept the request.
The parameters of asynchronous RFCs are not logged to the database, but sent directly to the server.
· Asynchronous RFCs allow the user to carry on an interactive dialog with the remote system.
· The calling program can receive results from the asynchronous RFC.
You can use asynchronous remote function calls whenever you need to establish communication with a remote system, but do not want to wait for the functionu2019s result before continuing processing. Asynchronous RFCs can also be sent to the same system. In this case, the system opens a new session (or window). You can then switch back and for between the calling dialog and the called session
To start a remote function call asynchronously, use the following syntax:
CALL FUNCTION Remotefunction STARTING NEW TASK Taskname
DESTINATION ...
EXPORTING...
TABLES ...
EXCEPTIONS...
The following calling parameters are available:
§ TABLES
passes references to internal tables. All table parameters of the function module must contain values.
§ EXPORTING
passes values of fields and field strings from the calling program to the function module. In the function module, the corresponding formal parameters are defined as import parameters.
§ EXCEPTIONS
See Using Predefined Exceptions for RFCs
RECEIVE RESULTS FROM FUNCTION Remotefunction is used within a FORM routine to receive the results of an asynchronous remote function call. The following receiving parameters are available:
§ IMPORTING
§ TABLES
§ EXCEPTIONS
The addition KEEPING TASK prevents an asynchronous connection from being closed after receiving the results of the processing. The relevant remote context (roll area) is kept for re-use until the caller terminates the connection.
Transactional RFC (tRFC)
Transactional RFC(tRFC, previously known as asynchronous RFC) is an asynchronous communication method that executes the called function module just once in the RFC server. The remote system need not be available at the time when the RFC client program is executing a tRFC. The tRFC component stores the called RFC function, together with the corresponding data, in the SAP database under a unique transaction ID (TID).
If a call is sent, and the receiving system is down, the call remains in the local queue. The calling dialog program can proceed without waiting to see whether the remote call was successful. If the receiving system does not become active within a certain amount of time, the call is scheduled to run in batch.
tRFC is always used if a function is executed as a Logical Unit of Work (LUW). Within a LUW, all calls
· are executed in the order in which they are called
· are executed in the same program context in the target system
· run as a single transaction: they are either committed or rolled back as a unit.
Implementation of tRFC is recommended if you want to maintain the transactional sequence of the calls.
Disadvantages of tRFC
· tRFC processes all LUWs independently of one another. Due to the amount of activated tRFC processes, this procedure can reduce performance significantly in both the send and the target systems.
· In addition, the sequence of LUWs defined in the application cannot be kept. It is therefore impossible to guarantee that the transactions will be executed in the sequence dictated by the application. The only thing that can be guaranteed is that all LUWs are transferred sooner or later

Difference between different Invoices

Hi Frnds,
Can any body let me know the difference between Commercial invoice,
Tax Invoice & Retail Invoice in terms of Bussiness as well as SAP.
Regards
sunil

A commercial invoice is a bill for the goods from the seller to the buyer. Commercial invoices are utilized by customs officials to determine the value of the goods in order to assess customs duties and taxes.
In general there is no standard form for a commercial invoice although they tend to contain many of the following features:
seller's contact information
buyer's contact information
consignee's contact information (if it is different from the buyers)
invoice date
a unique invoice number
sales terms (usually in incoterm format)
payment terms
currency of sale
full quantities and description of merchandise (Generally this includes unit price and total price. Product descriptions should be consistent with the buyer's purchase order. Including the Harmonized System commodity codes can be helpful, especially in countries that are WTO members.)
certification that the invoice is correct (Standard language is "We certify that this invoice is true and correct."
Excise Invoice is charged on the sale of a particular good.
For Combination of creating 2-3 invoices we need to maintain the same
- Payer.
- Shedule Lines.
- Payments Terms .
Excise invoice Original for Buyer copy, whether prices are inclusive or exclusive of excise duty.
The invoice in which the Excise duties are included.
As per Indian tax system, Excise duty (16%) is payable by each manufacturing unit on the value of manufactured goods / on the value added. The manufacturing plant is supposed to submit an excise duty report on fortnightly / monthly basis. Various registers (RG1, RG23A, RG23C, PLA) are maintained for that purpose, which record all the transactions including movement of goods, cenvat credit available and cash balance available.
In SAP, we use transaction j1id for configuration and j1iin, j2i7, j1i5, j2i5, j2i6, j1ip for creating, extracting and printing excise invoice.
Rewards Points if it useful.

Difference between different invokeLater() methods

What is actually the difference between:
SwingUtilities.invokeLater()
EventQueue.invokeLater()
Are there other classes that implements the invokeLater() method?

Use the frigging source, Luke.
javax.swing.SwingUtilities:
    public static void invokeLater(Runnable doRun) {
     EventQueue.invokeLater(doRun);
    }

Difference between a static class and singleton

What is the difference between a static object and a singleton ?
for example:
1 )
public class MyObject {
static MyObject singleton ;
public static MyObject getInstance() {
if (singleton ==null) singleton = new MyObject ();
return singleton;
private MyObject () {
supe();
public void myMethod() {
2 )
public class MyObject {
private MyObject () {
supe();
public static void myMethod() {
If I need to call the myMethod() , witch of this solution is better ?
// case 1
MyObject.getInstance().myMethod()
// case 2
MyObject.myMethod()
.....

This has been discussed a lot here.
Use the forum's search feature, or, since it's not necessarily reliable, use google.
For many intents and purposes, they're equivalent.
However, with a singleton you can implement an interface, and get polymorphic behavior. You can't do with with a class full of static methods (which, by the way, is NOT a static class).

Difference between different roles of APs

Hi
I am Kinda curious to study in detail the different station roles of the APs and the difference between them. Does anybody know where I can find this information?
Thanks in advance

Hi Sachendra,
Here is some reading that may help;
Roles and the Associations of Wireless Devices
From this good doc;
http://www.cisco.com/en/US/products/hw/routers/ps272/prod_configuration_basics09186a008073f6b7.html
Access Point as a Workgroup Bridge Configuration
http://www.cisco.com/en/US/products/hw/wireless/ps4570/products_configuration_example09186a00805b9b87.shtml
WLAN Radio Coverage Area Extension Methods
http://www.cisco.com/en/US/customer/products/hw/wireless/ps430/products_tech_note09186a00805190f1.shtml
Cisco Unified Wireless Network Overview
http://www.cisco.com/en/US/netsol/ns339/ns395/ns176/ns282/netbr09186a0080184925.html
Cisco Aironet Wireless Access Points Solution Overview
http://www.cisco.com/en/US/products/ps6521/prod_brochure0900aecd8035a015.html
Hope this helps!
Rob

Difference between application context and servlet context

HI,
what are the differences between an application context and a servlet context?
Also can any body elaborate on context path and servlet path. To quote servlet spec:
Context path: The path prefix associated with the ServletContext that this
servlet is a part of.
Servlet Path: The path section that directly corresponds to the mapping
which activated this request.Thanks in advance.

Application context and Servlet Context are pretty much interchangeable terms IIRC.
ContextPath == name of your web application
ServletPath == path to the servlet
Given http://localhost:8080/myWebApp/myServlet
contextPath == myWebApp
servletPath == myServlet
A jsp to help you understand this:
Working with server: <%= application.getServerInfo() %> 
Servlet Specification: <%= application.getMajorVersion() %>.<%= application.getMinorVersion() %> 
Sessionid : <%= session.getId() %> 
QueryString: <%= request.getQueryString() %> 
ContextPath: <%= request.getContextPath() %> 
ServletPath: <%= request.getServletPath() %> Cheers,
evnafets

How to calculate the % of time difference between different state

Hi there,
The below query returns the follwoign outptut. I need to calculate the % of time period that a specific state ( state ex: open or closed or all report )exists.
I have to find the time difference between the 2 states . How could I do that ?
The first row shows null for the previous state . How could get actual previous state for the first row?
SELECT si.station_name,
 vppstation.avi_control_state_code.STATE_SHORT_NAME,
 ash.state_id ,
 lag(ash.state_id) over (order by ash.STATE_EFF_DATE desc) previous_state,
 TO_NUMBER(TO_CHAR(ash.state_eff_date, 'SSSSS')) "periods in sec",
 TO_CHAR(ash.state_eff_date, 'dd-mon-yyyy hh24:mi:ss am') "Date"
 from vppstation.avi_state_history ash
left outer join vppstation.avi_control_state_code
 on ash.state_id = vppstation.avi_control_state_code.state_id
LEFT OUTER JOIN vpproadside.stations_installed si
 ON ash.station_id = si.station_id
 where ash.state_eff_date >= to_date('28/02/2010', 'dd/mm/yyyy')
 and ash.state_eff_date <= to_date('03/03/2010', 'dd/mm/yyyy') ;
 group by si.station_name
 ash.state_id
 order by ash.state_eff_date asc ;
STATION_NAME STATE_SHORT_NAME STATE_ID PREVIOUS_STATE periods in sec Date
IRDNCST02 Open 1 NULL 85166 01-mar-2010 23:39:26 pm
IRDNCST02 All Report 3 1 85159 01-mar-2010 23:39:19 pm
IRDNCMT01 Closed 2 3 81376 01-mar-2010 22:36:16 pm
IRDNCST02 Open 1 2 78723 01-mar-2010 21:52:03 pm
IRDNCST02 All Report 3 1 76023 01-mar-2010 21:07:03 pm
IRDNCMT01 Open 1 3 55922 01-mar-2010 15:32:02 pm
IRDNCMT01 Closed 2 1 54931 01-mar-2010 15:15:31 pm
IRDNCHA01 Closed 2 2 41291 01-mar-2010 11:28:11 am
IRDNCAS01 Open 1 2 38847 01-mar-2010 10:47:27 am
IRDNCAS01 All Report 3 1 37947 01-mar-2010 10:32:27 am
IRDNCST02 Open 1 3 35332 01-mar-2010 09:48:52 am
IRDNCST02 All Report 3 1 32632 01-mar-2010 09:03:52 am
IRDNCST02 Open 1 3 31502 01-mar-2010 08:45:02 am
IRDNCST02 All Report 3 1 28802 01-mar-2010 08:00:02 am
IRDNCHI01 Open 1 3 25368 01-mar-2010 07:02:48 am
IRDNCHI02 Open 1 1 23939 01-mar-2010 06:38:59 am
IRDNCMT01 Open 1 1 20696 01-mar-2010 05:44:56 am
IRDNCCH02 Open 1 1 13452 01-mar-2010 03:44:12 am
Edited by: Indhu Ram on Mar 11, 2010 1:34 PM
Edited by: Indhu Ram on Mar 11, 2010 2:20 PM

If you look at the table which is output of the given query , there is column called "STATE_ID" It shows the current state ie open or closed or all report.
The column 'PREVIOUS_STATE' shows the state before the current state. .In the table in 2nd row in previous_state column there is state_id = 1 (open)which is the state before 'all report state'

Differences between different versions of Oracle Database 10 g

I have some questions about the Oracle Database 10g Release 2 that we download from Oracle web site.
1)Does the software that we download from Oracle web site is similar to Enterprise Edition or Standard Edition or Standard Edition One or to which edition? In other words, similar to which edition?
2)What are the differences between Enterprise, Standard, and Standard Edition one?
3)Are they any features included in the licensing Oracle Database that does not include in the free one that we download from Oracle web site?

The dowloaded software contains every of the four editions. You choose which edition you want during the installation process.
The differences and extra-cost options are described in this paper on OTN
http://www.oracle.com/technology/products/database/oracle10g/pdf/twp_general_10gdb_product_family_0605.pdf

Difference between different types of patches

Hi all
I want to know difference between the database upgrade patchset, cpu,
psu, one off patches and what are the methods of deploying these patches?

Hi,
I want to know difference between the database upgrade patchset, cpu,psu, one off patches and what are the methods of deploying these patches?Refer thread for PUS and CPU:
Difference b/w CPU and PSU
usually *One-off patches are single small size patch used for fixing an existing bug.
PSU and CPU are consolidated of one-off patches, for more information refer thread mentioned above.
These are installed using Opatch utility
Patchests are certainly big in size and most of the bugfixes and new features are included within this, and will upgrade your patchset version.
suppose you Installed patchset 10.2.0.5 on 10.2.0.1 then your database will be upgraded to version *10.2.0.5*.
These patchsets are Installed using OUI
hope help :)
thanks,
X A H E E R

In OAWS difference between different stores

HI ALL,
I have worked on tcode OAWS but could not find exact difference between the follwing
-Storing for subsequent entry
-Storing for subsequent assignment
-Store and entry
-Store and assign
-Assign and store
Can nyone make me clear.
Regards,
Tejaswini

Hi
VENDOR_SYS --> System in which POs can be created for this Vendor. In other words system where the Vendor has been created for the purchase organization.
VENDOR_ACS --> System where Accounting for Vendor has to be checked. IN other words, its the FI system which take care of Financial transactions related to the vendor
Regards
Virender Singh

Difference between different attributes in Org Structres?

Dear Experts,
Could you please help me to understand the difference between system alias for vendor (Vendor_Sys) and Accounting system for vendor (Vendor_ACS)?
What is the relevance of each attribute in business scenario?
Thanks and regards,
Ranjan

Hi
VENDOR_SYS --> System in which POs can be created for this Vendor. In other words system where the Vendor has been created for the purchase organization.
VENDOR_ACS --> System where Accounting for Vendor has to be checked. IN other words, its the FI system which take care of Financial transactions related to the vendor
Regards
Virender Singh

Difference between different Context classes

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